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Nuetrik [128]
3 years ago
10

There are 72 students in the marching band. The ratio of girls to boys is 19 to 17.

Mathematics
1 answer:
8090 [49]3 years ago
4 0

Answer:

34 boys

Step-by-step explanation:

72 students

G-19:B-17 Ratio

19 + 17 = 36

72/36 = 2

19 x 2 = 38

38 girls

17 x 2 = 34

34 boys

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(-7x + 6) - (-2x + 9x - 2)
elena-s [515]

Answer:

-14x+4

Step-by-step explanation:

So the first set of paranthese don't really matter so you can rewrite it to this

-7+6-(-2x+9x-2)

Then  infront of the ( there is a - which means a -1. Now just do the disbutive property.

-7x+6+2x-9x+2

Now add like terms and you get your finial answer!

-14x+4

3 0
3 years ago
A boat moves 15.0 km across a lake in 30.0 min. what was the average speed of the boat in kilometers per hours?
Katen [24]

To work out the average speed you would have to use the formula

AS = 15.0 ÷ 30.0 = 0.5 which is distance divided by time.

The you would do 0.5 x 60 = 30 (60 minutes = 1 hour)

So the average speed would be 30.0 km/h.

4 0
3 years ago
Complete the solution of the equation. fine the value of y <br><br> 9x+7y=-12
dimaraw [331]

Answer:

y=-12/7 - 9x/7

that is the answer

8 0
2 years ago
Solve for x.
riadik2000 [5.3K]
I got a different answer..
and i don't see it as one of your choices, also your question is confusing since you're repeating it .-.
But anyways i got \frac{6}{11} ~or~ \frac{36}{66}
3 0
3 years ago
Solve the triangle C = 13º, A = 22°, c = 9
guapka [62]

Answer:

thats way to much

Step-by-step explanation:

OK

7 0
3 years ago
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